Clean building floors by sweeping, mopping, scrubbing, or vacuuming 2. Clean work surfaces (e.g., countertops, tabletops, desktops, etc.) using disinfecting products, rags, or power cleaning equipment 3. Clean windows, glass partitions, or mirrors using soapy water or other cleaners, sponges, or squeegees 4. Dust furniture, walls, machines, and equipment 5. Monitor building security and safety by performing such tasks as locking doors after operating hours and checking electrical appliance use to minimize the risks and hazards 16.